JPH0340269B2

JPH0340269B2 -

Info

Publication number: JPH0340269B2
Application number: JP57165181A
Authority: JP
Priority date: 1981-09-26
Filing date: 1982-09-24
Publication date: 1991-06-18
Also published as: FR2513729A1; FR2513729B1; GB2107026A; DE3138368C2; IT1149358B; US4456167A; DE3138368A1; IT8249155A0; GB2107026B; JPS5884276A

Description

【発明の詳細な説明】本発明は流体で冷却される内燃機関の冷却媒体
（以下冷媒と称す）循環路におけるサーモスタツ
トで制御される弁、とくに特許請求の範囲第１項
の従来技術部分の弁に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermostatically controlled valve in a cooling medium (hereinafter referred to as refrigerant) circulation path of a fluid-cooled internal combustion engine, and more particularly to Regarding valves.

ドイツ特許公報第1905039号から、ハウジング
に同軸の２つの結合された弁が設けられた、サー
モスタツトで制御される弁は公知である。これは
弁の間の、温度に感じる作業素子によつて作動さ
れ、ハウジングはラジエータもどり用およびバイ
パスライン用の本質的に互いに反対の２つの接続
管と円板弁の変位方向にだいたい直角のエンジン
への流出管とを持つている。バイパスラインを制
御する弁は感温作業素子の延長された軸に変位可
能に支持された弁体を持つている。同時にこの軸
は縦方向に流出みぞを持ち、その温度依存作業素
子の方への出口は弁体の変位によつて制御され
る。流出みぞは穴でできていて、それに放射方向
または放射方向に斜めの穴が口を開いている。し
かしこのサーモスタツトで制御される弁の欠点
は、弁体がバイパスラインの接続管に接触した後
に流出みぞも閉じるためには、作業素子の付加的
な制御ストロークが必要なことである。さらに、
この弁の構成によつては全冷媒量の小部分が作業
素子の周りを流れるだけなので、弁は高い制御慣
性を持つ。 A thermostatically controlled valve is known from German Patent Publication No. 1905039, in which the housing is provided with two coaxially connected valves. It is actuated by a temperature-sensitive working element between the valve and the housing is connected to two essentially opposite connecting pipes for the radiator return and bypass line and the engine approximately perpendicular to the direction of displacement of the disc valve. It has an outflow pipe. The valve controlling the bypass line has a valve body displaceably supported on the elongated shaft of the temperature-sensitive working element. At the same time, this shaft has a longitudinal outlet groove, the outlet of which towards the temperature-dependent working element is controlled by the displacement of the valve body. The outflow channel is made of a hole opening into it with radial or radially diagonal holes. However, a disadvantage of this thermostatically controlled valve is that an additional control stroke of the working element is required in order to also close the outflow channel after the valve body has contacted the connecting pipe of the bypass line. moreover,
Due to the design of this valve, only a small portion of the total refrigerant flow around the working element, so that the valve has a high control inertia.

本発明の目的は、バイパスラインを経てもどつ
てくる冷媒の流れを改善し、これによつて弁の制
御反応性を早くし、正確な温度調節が達成される
内燃機関の冷媒循環路用のサーモスタツトで制御
される弁を得ることである。 The object of the invention is to improve the flow of the refrigerant returning via the bypass line, thereby increasing the control responsiveness of the valves and achieving accurate temperature regulation. The goal is to obtain a valve that is controlled by a tact.

この目的は本発明によれば特許請求の範囲第１
項の特徴によつて達成される。 This purpose is achieved according to the invention in claim 1.
This is achieved by the features of the term.

本発明の他の特徴は特許請求の範囲第２項に示
してある。 Other features of the invention are set out in the second claim.

弁体自身に流出口を設けることによつて、冷媒
のほぼ全量が作業素子の周りを流れ、そのため制
御慣性がきわめて小さい。さらに、弁体がバイパ
スラインの接続管に接触したときバイパスライン
が完全に閉じていることによつて作業素子の長さ
を小さくすることができる。 By providing the outlet in the valve body itself, almost the entire amount of refrigerant flows around the working element, so that the control inertia is extremely low. Furthermore, since the bypass line is completely closed when the valve body contacts the connecting pipe of the bypass line, the length of the working element can be reduced.

図示のサーモスタツトで制御される弁１は、冷
却媒体（冷媒）をもどりライン４を経て冷媒ポン
プまたは内燃機関の冷却ジヤケツトの入口ソケツ
ト管に送るラジエータのもどりライン２とバイパ
スライン３とを制御する。ラジエータのもどりラ
イン２は弁１がはまつて固定されるリング形のへ
こみ５を持つている。弁１はラジエータもどりラ
イン２の組み立て中リング形へこみ５にしつかり
と挟まれる取り付けフランジ７を持つハウジング
６と、間にある温度依存作業素子（膨張材料素
子）１０の作業を受ける同軸に結合された２つの
弁８，９とを含む。弁８はバイパスラインを制御
し、弁９はラジエータもどりライン２を制御す
る。作業素子10には本質的に弁８を構成する、流
出口１２のある弁体１１を設けてある。流出口は
バイパスライン３の接続管１３の正面につくられ
た弁座１４と供働し、バイパスライン制御弁９が
閉じられたとき弁座１４にあたる位置に設けられ
る。弁体１１は、弁が開かれているとき、弁座１
４との間にすき間１８を保つて温度に依存して接
続管１３の周面１７にかぶさる円筒形のカラー１
６を備えた、流出口１２を持つ平らなベース部１
５を含む。流出口１２は弁１の軸線Ａ−Ａを中心
として対称にベース部１５に配置されたいくつか
の長い穴であるのが好ましい。流出口１２と弁座
１４との間のすき間とは作動の必要性に応じて適
合できるように設計される。方向性を持つた冷媒
流を得るために、流出口１２は弁体１１のカラー
１６から弁１の軸線Ａ−Ａに対し上方内向きに延
びる案内面１９を持つ。弁１の軸Ａ−Ａの同軸に
弁９とハウジング６との間に圧力ばね２０が、弁
８とハウジング６との間に圧力ばね２１がある。 The illustrated thermostat-controlled valve 1 controls a radiator return line 2 and a bypass line 3 for transporting the cooling medium (refrigerant) via a return line 4 to the refrigerant pump or to the inlet socket pipe of the cooling jacket of the internal combustion engine. . The return line 2 of the radiator has a ring-shaped recess 5 into which the valve 1 is fixed. The valve 1 is coaxially connected to a housing 6 with a mounting flange 7 which is clamped into the ring-shaped recess 5 during assembly of the radiator return line 2 and receives the work of an intervening temperature-dependent working element (expandable material element) 10. It includes two valves 8 and 9. Valve 8 controls the bypass line and valve 9 controls the radiator return line 2. The working element 10 is provided with a valve body 11 with an outlet 12, which essentially constitutes the valve 8. The outflow port cooperates with a valve seat 14 formed in front of the connecting pipe 13 of the bypass line 3, and is provided at a position corresponding to the valve seat 14 when the bypass line control valve 9 is closed. The valve body 11 is connected to the valve seat 1 when the valve is opened.
A cylindrical collar 1 that covers the peripheral surface 17 of the connecting pipe 13 depending on the temperature while maintaining a gap 18 between the collar 1 and the connecting pipe 13.
6, a flat base part 1 with an outlet 12
Contains 5. The outlet openings 12 are preferably several elongated holes arranged in the base part 15 symmetrically about the axis A-A of the valve 1. The clearance between the outlet 12 and the valve seat 14 is designed to be adapted to the operating needs. In order to obtain a directional coolant flow, the outlet 12 has a guide surface 19 extending upwardly and inwardly from the collar 16 of the valve body 11 relative to the axis A--A of the valve 1. Coaxially with the axis A--A of the valve 1, there is a pressure spring 20 between the valve 9 and the housing 6, and a pressure spring 21 between the valve 8 and the housing 6.

バイパス３を流れる冷媒が温度依存作業素子１
０の開き温度により低温度にあると、弁１はラジ
エータもどりライン２がもどりライン４に対して
閉じ、バイパスライン３がもどりライン４に対し
て開いている第１図に示す位置をとる。冷媒の一
部はバイパスライン３からすき間１８を通つても
どりライン４へ、残りの冷媒はバイパスライン３
から流出口１２を通つてもどりライン４に流れ、
この残りの冷媒は案内面１９によつて作業素子１
０に向けられてその周りを流れる。弁１の最高の
機能を達成するために、流出口を流れる部分流は
全冷媒流の大きな部分で構成されるようにする。 The refrigerant flowing through the bypass 3 is connected to the temperature-dependent working element 1
At low temperatures with an opening temperature of 0, the valve 1 assumes the position shown in FIG. 1 in which the radiator return line 2 is closed to the return line 4 and the bypass line 3 is open to the return line 4. A portion of the refrigerant returns from the bypass line 3 through the gap 18 to the return line 4, and the remaining refrigerant returns to the bypass line 3.
flows from the outlet through the outlet 12 to the return line 4,
This remaining refrigerant is transferred to the working element 1 by the guide surface 19.
It is directed towards 0 and flows around it. In order to achieve the best performance of the valve 1, the partial flow flowing through the outlet should constitute a large proportion of the total refrigerant flow.

冷媒の温度がだんだん高くなるにつれて弁１
は、作業素子１０の作用によつて、バイパスライ
ン３とラジエータもどりライン２とが部分的に開
いた中間位置を通つて、全冷媒が全開の弁９を通
つてラジエータもどりライン２からもどりライン
４に流れ、バイパスライン３が閉じた位置に働
く。この位置においては、弁９の最大に開いた位
置に達すると、弁体１１はそのベース部１５が接
続管１３の正面で構成される弁座１４と接触する
ので、本願発明の制御弁、とくにバイパスライン
制御弁の上記の特長により、冷媒の流れは大部分
直接的に温度依存作業素子に向けられるので素早
い反応が得られ、正確な温度制御が可能となる。 As the temperature of the refrigerant gradually increases, valve 1
By the action of the working element 10, the bypass line 3 and the radiator return line 2 pass through an intermediate position where they are partially open, and all the refrigerant flows from the radiator return line 2 to the return line 4 through the fully open valve 9. The bypass line 3 operates in the closed position. In this position, when the valve 9 reaches its maximum open position, the base portion 15 of the valve body 11 comes into contact with the valve seat 14 formed in the front of the connecting pipe 13. The above-described features of the bypass line control valve direct the refrigerant flow mostly directly to the temperature-dependent working elements, resulting in a fast response and accurate temperature control.

[Brief explanation of drawings]

第１図は内燃機関のサーモスタツトで制御され
る弁の領域における冷媒の循環を示す断面図であ
る。第２図は弁体の平面図である。１……弁、２……ラジエータのもどりライン、
３……バイパスライン、４……もどりライン、６
……ハウジング、８……バイパスライン制御弁、
９……もどりライン制御弁、１１……弁体、１２
……流出口、１３……接続管、１４……弁座、１
５……ベース部、１６……カラー、１８……すき
間、１９……冷媒案内面。 FIG. 1 is a sectional view showing the circulation of coolant in the region of a thermostatically controlled valve of an internal combustion engine. FIG. 2 is a plan view of the valve body. 1...Valve, 2...Radiator return line,
3...Bypass line, 4...Return line, 6
... Housing, 8 ... Bypass line control valve,
9... Return line control valve, 11... Valve body, 12
... Outlet, 13 ... Connection pipe, 14 ... Valve seat, 1
5... Base portion, 16... Collar, 18... Gap, 19... Refrigerant guide surface.

Claims

[Claims] 1. Two valves 8 and 9 coaxially disposed and coupled in order to control a radiator return line and a bypass line, respectively, in a coolant circulation path of a water-cooled internal combustion engine; and a temperature-dependent working element 10 provided between the valves, the bypass line control valve 8 has a valve body 11 provided in the temperature-dependent working element 10, and the valve body 11 is controlled depending on the temperature. This is a thermostat-controlled valve in the coolant circulation path of an internal combustion engine having an outlet 12, the valve body 11 having a flat base part 15 provided with the outlet 12 and a cylindrical shape on the periphery of the base part. It also has a collar 16 provided on the bypass line 3, which faces the connecting pipe 13 of the bypass line 3, and is driven by the temperature-dependent working element 10 depending on the temperature of the medium to open and close the connecting pipe. When the control valve 8 is closed, the collar 16 covers the connecting pipe 13, and the outflow port 12 is provided at a position corresponding to the valve seat 14 of the connection pipe. It has an inwardly extending guide surface 19, which directs the flow of cooling medium towards the temperature-dependent working element when the bypass line control valve is opened, and is characterized by a gap 18 between the collar 16 and the valve seat 14. control valve. 2. Claim 1, wherein the outflow ports 12 are a plurality of circumferentially long holes provided in the base portion 15 of the valve body 11 symmetrically about the axis of the bypass line control valve 8. Control valve as described in section.